X= int(input())
if(X>=400 and X<=599):
	print(8)
elif(X>599 and X<800):
    print(7)
elif(X>=800 and X<1000):
    print(6)
elif(X>=1000 and X<1200):
    print(5)
elif(X>=1200 and X<1400):
    print(4)
elif(X>=1400 and X<1600):
    print(3)
elif(X>=1600 and X<1800):
    print(2)
elif(X>=1800 and X<2000):
    print(1) X= int(input()) X int(input()) int input() input if(X>=400 and X<=599):
	print(8)
elif(X>599 and X<800):
    print(7)
elif(X>=800 and X<1000):
    print(6)
elif(X>=1000 and X<1200):
    print(5)
elif(X>=1200 and X<1400):
    print(4)
elif(X>=1400 and X<1600):
    print(3)
elif(X>=1600 and X<1800):
    print(2)
elif(X>=1800 and X<2000):
    print(1) X>=400 and X<=599 X>=400 X 400 X<=599 X 599 print(8) print 8 elif(X>599 and X<800):
    print(7) X>599 and X<800 X>599 X 599 X<800 X 800 print(7) print 7 elif(X>=800 and X<1000):
    print(6) X>=800 and X<1000 X>=800 X 800 X<1000 X 1000 print(6) print 6 elif(X>=1000 and X<1200):
    print(5) X>=1000 and X<1200 X>=1000 X 1000 X<1200 X 1200 print(5) print 5 elif(X>=1200 and X<1400):
    print(4) X>=1200 and X<1400 X>=1200 X 1200 X<1400 X 1400 print(4) print 4 elif(X>=1400 and X<1600):
    print(3) X>=1400 and X<1600 X>=1400 X 1400 X<1600 X 1600 print(3) print 3 elif(X>=1600 and X<1800):
    print(2) X>=1600 and X<1800 X>=1600 X 1600 X<1800 X 1800 print(2) print 2 elif(X>=1800 and X<2000):
    print(1) X>=1800 and X<2000 X>=1800 X 1800 X<2000 X 2000 print(1) print 1 X= int(input()) int(input()) X
X= int(input())
if(X>=400 and X<=599):
	print(8)
elif(X>599 and X<800):
    print(7)
elif(X>=800 and X<1000):
    print(6)
elif(X>=1000 and X<1200):
    print(5)
elif(X>=1200 and X<1400):
    print(4)
elif(X>=1400 and X<1600):
    print(3)
elif(X>=1600 and X<1800):
    print(2)
elif(X>=1800 and X<2000):
    print(1)